FOEAMINirEEA OF THE PHILIPPINE AND ADJACENT SEAS. 125 



TEXTL'LARIA QUADRILATERA Schwager. 



Plate 23, figs. 2a, b. 



Textularia quadrilalera Schw.^ger, JVbvara-Exped., Geol. Theil, vol. 2, 1866, 

 p. 253, pi. 7, fig. 10. — ^H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 358, pi. 42, figs. 8-12.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, 

 p. 24, figs. 42-44 (in text). 



Bolivina quadril-atera Wright, Proc. Roy. Irish Acad., ser. 3, vol. 1, 1891, p. 475> 



This species has occurred at a large number of stations, and its 

 range of depth is very consistent with the records from other por- 

 tions of the North Pacific. The stations vary in depth from 230 

 fathoms to 1,599 fathoms (420 to 2,775 meters), the majority of 

 these being between 500 and 800 fathoms (914 and 1,463 meters). 



Both microspheric and megalospheric forms occur in considerable 

 numbers and are easily distinguished at a glance, the character of 

 the initial portion of the test being very different — that of the micro- 

 spheric form narrow, tapering to a j^oint, while the megalospheric 

 form is blunt and broad at the initial end. The spine at the initial 

 end is not always present. 



Textularia quadrilatera — Material examined. 



Genus BIGENERINA d'Orbigny, 1826. 



BIGENERINA NODOSARIA d'Orbigny. 



Plate 26, fig. 2. 



Bigenerina nodosaria d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 261, pi. 11 

 figs. 9-11; Modeles, 1826, No. 57.— H. B. Br.vdy, Rep. Voy. Challenger, Zool- 

 ogy, vol. 9, 1884, p. 369, pi. 44, figs. 14-18.— Cushman, Bull. 71, U. S. Nat. 

 Mus., pt. 2, 1911, p. 27, figs. 46-48 (in text). 



Textularia agglutinans, var. nodosaria Parker and Jones, Philos. Trans. Roy. 

 Soc, vol. 155, 1865, p. 371, pi. 15, fig. 25; pi. 17, fig. 80. 



